setup.sh no longer installs all rubies. (closes #323)
setup.sh no longer installs all rubies. (closes #323)

kbrock/chruby,kbrock/chruby,ngpestelos/chruby,ngpestelos/chruby,postmodern/chruby,ilikepi/chruby,ilikepi/chruby,regularfry/chruby,regularfry/chruby,postmodern/chruby